chromeec: Add support for reading second battery info
We share the same shared memory fields for both batteries. When
the host wants to switch battery to read out, it will:
- Set BTID (EC_ACPI_MEM_BATTERY_INDEX) to the required index
- Wait for BITX (EC_MEMMAP_BATT_INDEX) to have the required value
- Then fetch the data
BRANCH=none
BUG=b:65697620
TEST=Boot lux, both /sys/class/power_supply/BAT0 and BAT1 are
present, data is valid.
Change-Id: Ib06176e6ab4c45a899259f0917e6292121865ed6
Signed-off-by: Nicolas Boichat <drinkcat@chromium.org>
Reviewed-on: https://review.coreboot.org/23598
Reviewed-by: Furquan Shaikh <furquan@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
Reviewed-by: Duncan Laurie <dlaurie@chromium.org>
This commit is contained in:
Nicolas Boichat
Furquan Shaikh
parent
857a387520
commit
07fe6184bc
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@ -16,6 +16,227 @@
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// Scope (EC0)
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// Scope (EC0)
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/* Mutex for EC battery index interface */
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Mutex (BATM, 1)
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// Wait for desired battery index to be presented in shared memory
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// Arg0 = battery index
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// Returns Zero on success, One on error.
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Method (BTSW, 1)
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{
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#ifdef EC_ENABLE_SECOND_BATTERY_DEVICE
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If (LEqual (BTIX, Arg0)) {
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Return (Zero)
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}
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If (LGreaterEqual (Arg0, BTCN)) {
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Return (One)
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}
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Store (Arg0, \_SB.PCI0.LPCB.EC0.BTID)
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Store (5, Local0) // Timeout 5 msec
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While (LNotEqual (BTIX, Arg0))
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{
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Sleep (1)
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Decrement (Local0)
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If (LEqual (Local0, Zero))
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{
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Return (One)
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}
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}
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#endif
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Return (Zero)
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}
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// _STA implementation.
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// Arg0 = battery index
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Method (BSTA, 1, Serialized)
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{
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If (Acquire (^BATM, 1000)) {
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Return (Zero)
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}
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If (And(Not(BTSW (Arg0)), BTEX)) {
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Store (0x1F, Local0)
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} Else {
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Store (0x0F, Local0)
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}
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Release (^BATM)
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Return (Local0)
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}
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// _BIF implementation.
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// Arg0 = battery index
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// Arg1 = PBIF
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Method (BBIF, 2, Serialized)
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{
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If (Acquire (^BATM, 1000)) {
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Return (Arg1)
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}
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If (BTSW (Arg0)) {
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Release (^BATM)
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Return (Arg1)
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}
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// Last Full Charge Capacity
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Store (BTDF, Index (Arg1, 2))
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// Design Voltage
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Store (BTDV, Index (Arg1, 4))
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// Design Capacity
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Store (BTDA, Local0)
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Store (Local0, Index (Arg1, 1))
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// Design Capacity of Warning
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Divide (Multiply (Local0, DWRN), 100, , Local2)
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Store (Local2, Index (Arg1, 5))
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// Design Capacity of Low
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Divide (Multiply (Local0, DLOW), 100, , Local2)
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Store (Local2, Index (Arg1, 6))
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// Get battery info from mainboard
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Store (ToString(Concatenate(BMOD, 0x00)), Index (Arg1, 9))
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Store (ToString(Concatenate(BSER, 0x00)), Index (Arg1, 10))
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Store (ToString(Concatenate(BMFG, 0x00)), Index (Arg1, 12))
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Release (^BATM)
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Return (Arg1)
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}
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// _BIX implementation.
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// Arg0 = battery index
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// Arg1 = PBIX
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Method (BBIX, 2, Serialized)
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{
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If (Acquire (^BATM, 1000)) {
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Return (Arg1)
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}
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If (BTSW (Arg0)) {
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Release (^BATM)
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Return (Arg1)
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}
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// Last Full Charge Capacity
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Store (BTDF, Index (Arg1, 3))
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// Design Voltage
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Store (BTDV, Index (Arg1, 5))
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// Design Capacity
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Store (BTDA, Local0)
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Store (Local0, Index (Arg1, 2))
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// Design Capacity of Warning
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Divide (Multiply (Local0, DWRN), 100, , Local2)
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Store (Local2, Index (Arg1, 6))
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// Design Capacity of Low
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Divide (Multiply (Local0, DLOW), 100, , Local2)
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Store (Local2, Index (Arg1, 7))
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// Cycle Count
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Store (BTCC, Index (Arg1, 8))
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// Get battery info from mainboard
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Store (ToString(Concatenate(BMOD, 0x00)), Index (Arg1, 16))
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Store (ToString(Concatenate(BSER, 0x00)), Index (Arg1, 17))
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Store (ToString(Concatenate(BMFG, 0x00)), Index (Arg1, 19))
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Release (^BATM)
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Return (Arg1)
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}
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// _BST implementation.
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// Arg0 = battery index
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// Arg1 = PBST
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// Arg2 = BSTP
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// Arg3 = BFWK
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Method (BBST, 4, Serialized)
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{
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If (Acquire (^BATM, 1000)) {
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Return (Arg1)
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}
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If (BTSW (Arg0)) {
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Release (^BATM)
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Return (Arg1)
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}
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//
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// 0: BATTERY STATE
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//
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// bit 0 = discharging
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// bit 1 = charging
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// bit 2 = critical level
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//
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Store (Zero, Local1)
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// Check if AC is present
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If (ACEX) {
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If (BFCG) {
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Store (0x02, Local1)
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} ElseIf (BFDC) {
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Store (0x01, Local1)
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}
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} Else {
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// Always discharging when on battery power
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Store (0x01, Local1)
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}
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// Check for critical battery level
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If (BFCR) {
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Or (Local1, 0x04, Local1)
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}
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Store (Local1, Index (Arg1, 0))
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// Notify if battery state has changed since last time
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If (LNotEqual (Local1, Arg2)) {
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Store (Local1, Arg2)
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If (LEqual(Arg0, 0)) {
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Notify (BAT0, 0x80)
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}
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#ifdef EC_ENABLE_SECOND_BATTERY_DEVICE
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Else {
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Notify (BAT1, 0x80)
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}
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#endif
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}
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//
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// 1: BATTERY PRESENT RATE
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//
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Store (BTPR, Index (Arg1, 1))
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//
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// 2: BATTERY REMAINING CAPACITY
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//
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Store (BTRA, Local1)
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If (LAnd (Arg3, LAnd (ACEX, LNot (LAnd (BFDC, BFCG))))) {
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// On AC power and battery is neither charging
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// nor discharging. Linux expects a full battery
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// to report same capacity as last full charge.
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// https://bugzilla.kernel.org/show_bug.cgi?id=12632
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Store (BTDF, Local2)
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// See if within ~6% of full
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ShiftRight (Local2, 4, Local3)
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If (LAnd (LGreater (Local1, Subtract (Local2, Local3)),
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LLess (Local1, Add (Local2, Local3))))
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{
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Store (Local2, Local1)
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}
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}
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Store (Local1, Index (Arg1, 2))
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//
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// 3: BATTERY PRESENT VOLTAGE
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//
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Store (BTVO, Index (Arg1, 3))
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Release (^BATM)
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Return (Arg1)
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}
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Device (BAT0)
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Device (BAT0)
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{
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{
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Name (_HID, EISAID ("PNP0C0A"))
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Name (_HID, EISAID ("PNP0C0A"))
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@ -86,138 +307,112 @@ Device (BAT0)
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Method (_STA, 0, Serialized)
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Method (_STA, 0, Serialized)
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{
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{
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If (BTEX) {
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Return (BSTA (0))
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Return (0x1F)
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} Else {
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Return (0x0F)
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}
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}
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}
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Method (_BIF, 0, Serialized)
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Method (_BIF, 0, Serialized)
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{
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{
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// Last Full Charge Capacity
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Return (BBIF (0, PBIF))
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Store (BTDF, Index (PBIF, 2))
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// Design Voltage
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Store (BTDV, Index (PBIF, 4))
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// Design Capacity
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Store (BTDA, Local0)
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Store (Local0, Index (PBIF, 1))
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// Design Capacity of Warning
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Divide (Multiply (Local0, DWRN), 100, , Local2)
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Store (Local2, Index (PBIF, 5))
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// Design Capacity of Low
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Divide (Multiply (Local0, DLOW), 100, , Local2)
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Store (Local2, Index (PBIF, 6))
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// Get battery info from mainboard
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Store (ToString(Concatenate(BMOD, 0x00)), Index (PBIF, 9))
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Store (ToString(Concatenate(BSER, 0x00)), Index (PBIF, 10))
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Store (ToString(Concatenate(BMFG, 0x00)), Index (PBIF, 12))
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Return (PBIF)
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}
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}
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Method (_BIX, 0, Serialized)
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Method (_BIX, 0, Serialized)
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{
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{
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// Last Full Charge Capacity
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Return (BBIX (0, PBIX))
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Store (BTDF, Index (PBIX, 3))
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// Design Voltage
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Store (BTDV, Index (PBIX, 5))
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// Design Capacity
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Store (BTDA, Local0)
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Store (Local0, Index (PBIX, 2))
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// Design Capacity of Warning
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Divide (Multiply (Local0, DWRN), 100, , Local2)
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Store (Local2, Index (PBIX, 6))
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// Design Capacity of Low
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Divide (Multiply (Local0, DLOW), 100, , Local2)
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Store (Local2, Index (PBIX, 7))
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// Cycle Count
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Store (BTCC, Index (PBIX, 8))
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// Get battery info from mainboard
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Store (ToString(Concatenate(BMOD, 0x00)), Index (PBIX, 16))
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Store (ToString(Concatenate(BSER, 0x00)), Index (PBIX, 17))
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Store (ToString(Concatenate(BMFG, 0x00)), Index (PBIX, 19))
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Return (PBIX)
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}
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}
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Method (_BST, 0, Serialized)
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Method (_BST, 0, Serialized)
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{
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{
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//
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Return (BBST (0, PBST, BSTP, BFWK))
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// 0: BATTERY STATE
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//
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// bit 0 = discharging
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// bit 1 = charging
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// bit 2 = critical level
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//
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Store (Zero, Local1)
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// Check if AC is present
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If (ACEX) {
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If (BFCG) {
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Store (0x02, Local1)
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} ElseIf (BFDC) {
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Store (0x01, Local1)
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}
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} Else {
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// Always discharging when on battery power
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Store (0x01, Local1)
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}
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// Check for critical battery level
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If (BFCR) {
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Or (Local1, 0x04, Local1)
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}
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Store (Local1, Index (PBST, 0))
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// Notify if battery state has changed since last time
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If (LNotEqual (Local1, BSTP)) {
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Store (Local1, BSTP)
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Notify (BAT0, 0x80)
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}
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//
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// 1: BATTERY PRESENT RATE
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//
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Store (BTPR, Index (PBST, 1))
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//
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// 2: BATTERY REMAINING CAPACITY
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//
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Store (BTRA, Local1)
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If (LAnd (BFWK, LAnd (ACEX, LNot (LAnd (BFDC, BFCG))))) {
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// On AC power and battery is neither charging
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// nor discharging. Linux expects a full battery
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// to report same capacity as last full charge.
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// https://bugzilla.kernel.org/show_bug.cgi?id=12632
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Store (BTDF, Local2)
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// See if within ~6% of full
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ShiftRight (Local2, 4, Local3)
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If (LAnd (LGreater (Local1, Subtract (Local2, Local3)),
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LLess (Local1, Add (Local2, Local3))))
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{
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Store (Local2, Local1)
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}
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}
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Store (Local1, Index (PBST, 2))
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//
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// 3: BATTERY PRESENT VOLTAGE
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//
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Store (BTVO, Index (PBST, 3))
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Return (PBST)
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}
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}
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}
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}
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#ifdef EC_ENABLE_SECOND_BATTERY_DEVICE
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Device (BAT1)
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{
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Name (_HID, EISAID ("PNP0C0A"))
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Name (_UID, 1)
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Name (_PCL, Package () { \_SB })
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Name (PBIF, Package () {
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0x00000001, // 0x00: Power Unit: mAh
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0xFFFFFFFF, // 0x01: Design Capacity
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0xFFFFFFFF, // 0x02: Last Full Charge Capacity
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0x00000001, // 0x03: Battery Technology: Rechargeable
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0xFFFFFFFF, // 0x04: Design Voltage
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0x00000003, // 0x05: Design Capacity of Warning
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0xFFFFFFFF, // 0x06: Design Capacity of Low
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0x00000001, // 0x07: Capacity Granularity 1
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0x00000001, // 0x08: Capacity Granularity 2
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"", // 0x09: Model Number
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"", // 0x0a: Serial Number
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"LION", // 0x0b: Battery Type
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"" // 0x0c: OEM Information
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})
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Name (PBIX, Package () {
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0x00000000, // 0x00: Revision
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|
0x00000001, // 0x01: Power Unit: mAh
|
||||||
|
0xFFFFFFFF, // 0x02: Design Capacity
|
||||||
|
0xFFFFFFFF, // 0x03: Last Full Charge Capacity
|
||||||
|
0x00000001, // 0x04: Battery Technology: Rechargeable
|
||||||
|
0xFFFFFFFF, // 0x05: Design Voltage
|
||||||
|
0x00000003, // 0x06: Design Capacity of Warning
|
||||||
|
0xFFFFFFFF, // 0x07: Design Capacity of Low
|
||||||
|
0x00000000, // 0x08: Cycle Count
|
||||||
|
0x00018000, // 0x09: Measurement Accuracy (98.3%?)
|
||||||
|
0x000001F4, // 0x0a: Max Sampling Time (500ms)
|
||||||
|
0x0000000a, // 0x0b: Min Sampling Time (10ms)
|
||||||
|
0xFFFFFFFF, // 0x0c: Max Averaging Interval
|
||||||
|
0xFFFFFFFF, // 0x0d: Min Averaging Interval
|
||||||
|
0x00000001, // 0x0e: Capacity Granularity 1
|
||||||
|
0x00000001, // 0x0f: Capacity Granularity 2
|
||||||
|
"", // 0x10 Model Number
|
||||||
|
"", // 0x11: Serial Number
|
||||||
|
"LION", // 0x12: Battery Type
|
||||||
|
"" // 0x13: OEM Information
|
||||||
|
})
|
||||||
|
|
||||||
|
Name (PBST, Package () {
|
||||||
|
0x00000000, // 0x00: Battery State
|
||||||
|
0xFFFFFFFF, // 0x01: Battery Present Rate
|
||||||
|
0xFFFFFFFF, // 0x02: Battery Remaining Capacity
|
||||||
|
0xFFFFFFFF, // 0x03: Battery Present Voltage
|
||||||
|
})
|
||||||
|
Name (BSTP, Zero)
|
||||||
|
|
||||||
|
// Workaround for full battery status, enabled by default
|
||||||
|
Name (BFWK, One)
|
||||||
|
|
||||||
|
// Method to enable full battery workaround
|
||||||
|
Method (BFWE)
|
||||||
|
{
|
||||||
|
Store (One, BFWK)
|
||||||
|
}
|
||||||
|
|
||||||
|
// Method to disable full battery workaround
|
||||||
|
Method (BFWD)
|
||||||
|
{
|
||||||
|
Store (Zero, BFWK)
|
||||||
|
}
|
||||||
|
|
||||||
|
Method (_STA, 0, Serialized)
|
||||||
|
{
|
||||||
|
Return (BSTA (1))
|
||||||
|
}
|
||||||
|
|
||||||
|
Method (_BIF, 0, Serialized)
|
||||||
|
{
|
||||||
|
Return (BBIF (1, PBIF))
|
||||||
|
}
|
||||||
|
|
||||||
|
Method (_BIX, 0, Serialized)
|
||||||
|
{
|
||||||
|
Return (BBIX (1, PBIX))
|
||||||
|
}
|
||||||
|
|
||||||
|
Method (_BST, 0, Serialized)
|
||||||
|
{
|
||||||
|
Return (BBST (1, PBST, BSTP, BFWK))
|
||||||
|
}
|
||||||
|
}
|
||||||
|
#endif
|
||||||
|
|
|
||||||
|
|
@ -90,7 +90,9 @@ Device (EC0)
|
||||||
DEVE, 1, // EC supports device events
|
DEVE, 1, // EC supports device events
|
||||||
// make sure we're within our space envelope
|
// make sure we're within our space envelope
|
||||||
Offset (0x0e),
|
Offset (0x0e),
|
||||||
}
|
Offset (0x12),
|
||||||
|
BTID, 8, // Battery index that host wants to read
|
||||||
|
}
|
||||||
|
|
||||||
#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC_ACPI_MEMMAP)
|
#if IS_ENABLED(CONFIG_EC_GOOGLE_CHROMEEC_ACPI_MEMMAP)
|
||||||
OperationRegion (EMEM, EmbeddedControl,
|
OperationRegion (EMEM, EmbeddedControl,
|
||||||
|
|
@ -272,6 +274,11 @@ Device (EC0)
|
||||||
{
|
{
|
||||||
Store ("EC: BATTERY INFO", Debug)
|
Store ("EC: BATTERY INFO", Debug)
|
||||||
Notify (BAT0, 0x81)
|
Notify (BAT0, 0x81)
|
||||||
|
#ifdef EC_ENABLE_SECOND_BATTERY_DEVICE
|
||||||
|
If (CondRefOf (BAT1)) {
|
||||||
|
Notify (BAT1, 0x81)
|
||||||
|
}
|
||||||
|
#endif
|
||||||
}
|
}
|
||||||
|
|
||||||
// Thermal Overload Event
|
// Thermal Overload Event
|
||||||
|
|
@ -347,6 +354,11 @@ Device (EC0)
|
||||||
{
|
{
|
||||||
Store ("EC: BATTERY STATUS", Debug)
|
Store ("EC: BATTERY STATUS", Debug)
|
||||||
Notify (BAT0, 0x80)
|
Notify (BAT0, 0x80)
|
||||||
|
#ifdef EC_ENABLE_SECOND_BATTERY_DEVICE
|
||||||
|
If (CondRefOf (BAT1)) {
|
||||||
|
Notify (BAT1, 0x80)
|
||||||
|
}
|
||||||
|
#endif
|
||||||
}
|
}
|
||||||
|
|
||||||
// MKBP interrupt.
|
// MKBP interrupt.
|
||||||
|
|
|
||||||
|
|
@ -30,6 +30,8 @@ TIN8, 8, // Temperature 8
|
||||||
TIN9, 8, // Temperature 9
|
TIN9, 8, // Temperature 9
|
||||||
Offset (0x10),
|
Offset (0x10),
|
||||||
FAN0, 16, // Fan Speed 0
|
FAN0, 16, // Fan Speed 0
|
||||||
|
Offset (0x24),
|
||||||
|
BTVR, 8, // Battery structure version
|
||||||
Offset (0x30),
|
Offset (0x30),
|
||||||
LIDS, 1, // Lid Switch State
|
LIDS, 1, // Lid Switch State
|
||||||
PBTN, 1, // Power Button Pressed
|
PBTN, 1, // Power Button Pressed
|
||||||
|
|
@ -45,6 +47,9 @@ BTEX, 1, // Battery Present
|
||||||
BFDC, 1, // Battery Discharging
|
BFDC, 1, // Battery Discharging
|
||||||
BFCG, 1, // Battery Charging
|
BFCG, 1, // Battery Charging
|
||||||
BFCR, 1, // Battery Level Critical
|
BFCR, 1, // Battery Level Critical
|
||||||
|
Offset (0x4d),
|
||||||
|
BTCN, 8, // Battery Count
|
||||||
|
BTIX, 8, // Battery index
|
||||||
Offset (0x50),
|
Offset (0x50),
|
||||||
BTDA, 32, // Battery Design Capacity
|
BTDA, 32, // Battery Design Capacity
|
||||||
BTDV, 32, // Battery Design Voltage
|
BTDV, 32, // Battery Design Voltage
|
||||||
|
|
|
||||||
Loading…
Reference in New Issue